Warp stop-motion for wire-weaving looms.



No. 858,139. PATENTED JUNE 25,1907. 0.11. ATKINS.

WARP STOP MOTION FOR WIRE WEAVING LOOMS.

. APPLIOATIUE Hum Jill-1'31, 190B.

3 SHEETS-SHEET 1,

No. 858,139. PATENTED JimE zs, 1907.

' 0. H. ATKINS. WARP STOP MOTION FOR WIRE WEAVING LOOMS.

APPLICATION FILEDJULY 31, 1906. I

' 3 SHEETS-SHEET 2.

7 f fiymi No. 858,139. v PATENTED JUNE 25, 1907. c. H. ATKINS.

WARP STOP M01 WIRE WEAVING LOOMS.

APPLIO ED JULY 31, 1906.

3 SHEETS-SHEET 3- To all whom it may concern:

UNITED, STATES PATENT OFFICE.

CHARLES HENRY ATKINS, or SPRINGFIELD, MASSACHUSETTS.

WARP STOP-MOTION FOR W IRE-WEAVING LOOMS.

Specification of Letters Patent.

- Patented June 25, 1907.

Application filed July 31,1906. Serial No. 328,611.

Be it known that I, CnARLEsHENRY ATKINs, a citizen of the United States of America, and a resident of Springfield, in the county 'of Hampden and State of Massachusetts, have invented certain new and useful Improvements in Warp Stop Motion for Wire-Weaving Loo'ms, of which the following is a full, clear, and exact description.

This invention relates to a warp stop motion' especially for looms for weaving wire v or for the weaving of any textile fabric in means whereby upon the breakage of one .of the series of warp wires running through which essentially metallic warps are employed.

An object of the invention is to provide the loom' advantage'may be taken of t e metallic and current conducting uality, of the broken warp wire for the-esta lishment of an electric circuit which controls the stop motion. j V

Another object is to provide a magnetic brake in conjunction with the stop motion of the loom, the same to becomeefiective immediately the loom driving mechanism is disconnected to instantaneously stop part of. the loom which may be running under momentum. And another object is to provide a stop motion with provisions whereby the loom will be stopped,- irrespective of where the lay and other moving parts may be at the time of breakage of a warp wlre,

therewith of the present improved electrical I stop motion, the same being l'ar 'e measure illustrated in a diagrammatica manner.

This view shows the lay as in its most forward or beating-up position. Fig. 2 is a view substantially like Fig. 1 but showin the lay as in its most rearward position, and at a time 0111 when the stop motion, as illustrated in t ese views, can be operative to osition of stoppage generally stop the running of theloom. Fig. 2* is a sectional elevation as taken on the line "2*2, Fig. 2, for especially showing a face view of the controller actuating cam hereinafter particularly referred to. Fig. 3 is a diagrammatic illustration of the stop motion comprising the components essentiall illcluded in the preceding figure, but Wit the capability of stopping the loom instantly on-a :warp -break, irrespective of where the moving parts of the loom at that time maybe. Fig. 4 is a sectional elevation of the lay ofthe loom showing the location thereon ofa number of-insulated pieces hereinafterpar,

ticularly referred to.- The same or similar characters denote the same or similar parts inall of the views.

. In the drawings,A represents a shaft which may be properly. regarded as the driving shaft for actuating the movable parts. of the loom, the same being mounted in ]O11I- .nal brackets. ac understood as mounted on the loornframe B, and capable, in addition to its free rotary motion, of a slight endwise shifting movement in its journals. This shaft A by belt I) runnin around a pulle b thereon drives a pulley on another sha t D which is understood as having connections,

by mediums of trasmissionmostof which are not shown, with the various motlonsf of the loom.

E represents the primary driver for the driving shaft A loosely mounted and movable relatively to such shaft and adapted by a magnetic connecting device, when the latter is energized, to be connected with the shaft. The driver E is shown as in the formof a pulley and understood as loosely rotatable about an intermediate ortion of the said shaft A, and having a c utch magnet F set within the face thereof and adjacent a disk G which is keyed-to and'revolves in unison with t e shaft A. Supported adjacent and atthe ide of the disk G opposite from the ulley carrying the clutch magnet F is, a brake magnet J re resents a dynamo orother suitable type 0 generator, oppositely connected to which are conductors-c and c, the former running from the generator to a collector ring d insulated from and surroundm the shaft A,

and wired to one end of the co' of the clutch magnet F, while the conductor 0 oppositely connected with the genera torrruns to a con- IIO.

tact e and through the switch f, when the latter is closed, to another contact '01 with which the conductor a has connection, and runs to the other collector ring (1 adjacent the one d which is wired to the other end of the clutch magnet coil F. A circuit for the brake magnet coil, including the dynamo, may, for instance, be constituted by a Wire 9 having connection with one end of the brake ma transversely of the loom, insulated from ah other metallic parts of the loom and having a position adjacent the multiplicity of longitudioally extending warp wires x to be, with great certainty or probability, contacted against by any warp wire, running from the Warp beam to the made cloth near the breast beam, which may become severed. This metallic piece is represented in Fig. 3 as made in the form of a metallic strip understood as extending the whole length of the metallic lay beam M and by the insulation h'abso lutely out of metallic or electrical connection with the lay beam as well as all other parts of the loom.

N represents an electro magnet for controlling the aforementioned swltch and conserlluently the cut-out for the magnetic clutch an magnetic brake circuits, such switch operating and in conjunction with the contacts e and c, 0?. The part j, which is the armature of the electro magnet N is ivotally mounted at 7' and has a catch shoul er j for engaging the switch f and holding itin the position shown by full lines Fig. 3, and by dotted lines Figs. 1 and 2, against the action of the switch spring f and the spring j holds the armature in its switch engaging position and away from the electro magnet-the same to be overpowered, however, by the attraction of the electro magnet when the same becomes energized onth'e completion or closing of the electro magnet circuit by a. metallic warp wire coming to contact against said insulated transversely extending metallic piece L. One of the conductors 7c of the electro magnet circuit has connection with one end of the electro magnet coil and with the transverse insulated piece or strip L. The circuit conductor 76 has connection with the other end of.

- the-electro magnet coil, and as an instance,-

and for the purpose of present illustration,

' with the metallic lay beam M.

,K represents a battery orother generator connected in the electro magnet circuit.

Itiis to be stated, as a practical and important-tactgof which especial cognizance is to,

be taken, that the metallic part of the loom, I

as for instance, the lay beam M, is one in which there is to be at all times a metallic or electrical connection with the warp wires, it being remembered that the War wires are wound around an iron or steel warp bean. mounted in metal journal bearings in the iron loom frame, in which frame the metal disconnected from the driving shaft, and at the same time establishing the circuit, including the dynamo and brake magnet, for rendering the brake operable to quickly overcome the momentum of the driving shaft.

It will be explained that when the magnet coil F is energlzed by the current from the dynamo in the circuit through such magnet coil, the metallic portions of the iron pulley E are constituted a powerful magnet which the disk G on the driving shaft a will be attracted to, theslight end shake of the shaft permitting; it beingsimilarly the case that when the circuit conductors, including the brake magnet coil, are energized'by being in circuit with the dynamo, the iron in the circular metallic body within which the brake magnet is embodied, becomes a poweri'ul electro magnet to which will be attracted, in the opposite direction, the disk G on the slightly endwise shiftable driving shaft A.

The electro magnetic and partially mechanical warp stop motion so far as has been described with the pointing out of the constituents'thereof, is one of a simple character,

operable upon the severing of a warp wire to instantaneousl absolutely cut out the dynamo current establish the dynamo current through the magnet brake to instantly stop the loom, ir-' respective of the positions in which the moving loom parts may be at the instant of the breaking of the warp; and from the substantially diagrammatic View, Fig. 3, the essentials comprised in the stop motion as constituted to the extentof means thus far described, may be identified, and the operation thereof understood. And in connection with the said Fig. 3, it will be seen that the clutch magnet circuit is closed and. the magneticbrake circuit open; the switch f connecting the-contact e with the contact 71 being held in such position by the electro magnet armature Now, assuming that the cm the magnetic clutch and v warp wire, as represented by the dotted line in said Fig. '3, becomes severed and falls metallic connectionk a return course to the I r 5 battery. 1

In some cases. the warp might be severed at such a oint that the course of the current instead 0 being through such warp from the metallic piece L to'the warp beam, and from the latter throu h the frame back to the lay, might be from t e metallic piece L through a portion'of' the severed warp through the breast beam to complete the circuit,-no attempt being'herein made to set forth all of the courses which the electro magnet circuit, when closed by a severed Warp, may have, as such circuit will be in part by its shortest path through some metallic part of the loom frame; and the utilization of the metallicframe and parts of the loomas a conductor.

is merely a practical expedient for the avoidance of some wiring which would be cumbersome.

Inasmuch as it may, more often than otherwise, be desiredthat the 100m shall not be stop ed, after a warp has-become broken,

unti the o erating parts of the loom shallhave move to some desired and redetermined osition, as, for instance,-wit the lay swung lly back and the other arts intheir corresponding positions, 'an a ditional circuit'comprising the dynamo and the mag netic clutch isprovided with a circuit opening and closingcontrollertherefor, and operab e' for maintaining a dynamo circuit through the magnetic clutch even after a dynamo circuit has been established by the shifting of the switch f through the brake magnet,-such further clutch magnet circuit by the properly timed action of the controller being opened so as to leave no circuit closed for the dynamo current through the clutch magnet, at the desired given-time, as for instance, when the lay is fully back.

1? represents the controller comprising oposite separated metallic parts m, n, insulated from each other at nF, and a movablebar 0 consisting of metallic and insulating sections 0 0 to electrically connect, or leave insu lated from, .each other, accordingly as the bar is in the positions-of Figs. 1 or 2, the opposite metallic members m and n of the controller. Thewiresp and q are in electrical connection with the o posite metallic parts m and n of the centre er and in circuit with 'tablished through the clutch magnet by way the controller after the normal dynamo current through the c utch magnet of the lay beam, other similar strips L and L in Fig. 4, as located upon the front of the the clutch magnet-F and with the dynamo; and a simple, economical and practical mode of wiring is to run-the wire from connection with controller part 1:. tot e contact 6 and through the latter to connection with the dynamo connecting wire 0 and .to run the Wire pfrom the controller part m to connection with the wire a? which is connected with and through the clutchmagnet coil and by' way of wire a back to the dynam0.- I

The movable circuit closing and opening bar 0 of the controller is represented in Figs. 2 and 2 as operated by a cam s on a rotary shaft-v connected to be driven by the worm gearing u with the shaft D of the loom, saidcam being'so sha edand the motion thereof being so timed t at a quick downward andupwardly returning movement will be periodically im arted to the said bar 0 of the controller to c ange the relations and establish the conditions perceived inFig. 1. to those perceived in Fig.2, in which figures the circuit in which the controller is comprised, in- 1 Fig. 1, is closed, the lay being in a forward position while in Fig.- 2 the circuit at the controller, is indicated as opened, and the lay as in itsmost rearwardly swung position.

When the stop motion is applied on the loom with conductors for establishing a cir-' cuit comprising the dynamo, the clutch magnetand the controller P, additional to the dynamo and magnetic ,clutch circuit in which the switch f is comprised, as represented in Figs. 1 and 2 ,in extension of the idea'of means more simply represented inFig. 3 ,-it is tobe provided'that the brake-magnet in opposition tothe clutch magnet must be of equal, or in any event of no greater, effectiveness than the clutch magnet, for it will be apparent that if a warp breaks ata-time when the lay is otherwise than fully back there will be a d namo current established through the bra e magnet during a very short interval that a dynamo current remains also es- I I O of the conductors connected with and included in the controller; and, hence, as is de-v sired, the clutch will not become denergized, and will not terminate the connection with the driving shaft, to permit the magnetic brake I 1 5 to' become effective to stop said shaft until the second pathfor the dynamo currentthrough the clutch magnet is terminated at.

ath for such- I 20 has, on a warp breaking, been terminated by the opening of the switch f. a

' I have shown in addition to the transverse insulated strip'Llocated at the rear portion lay beam and on a lower rear portion of the reed cap; and in Fig. 2 still furtherv of these transverse metallic strips are represented by- L L as additionally proyided at suitable points adjacent and crosswise in relation to the warp wires, behind the lay and understood as mounted on, and insulated from, suitable supports therefor other than the lay. These transverse insulated cross strips, rods or wires, cost almost nothing, and it is con sidered desirable to have an ample number of them at various places between the warp beam and cloth line, each having a connection in the circuit comprising the electro magnet N in substantially the same manner as provided for the connection in such circuit of the particular insulated metallic strip L.

.By' providing a number of the strips electrically connected in the manner of the one,

L particularly described and appropriately arranged the best of assurance will be had that no matter where a warp wire breaks nor whether it sags downwardly or snaps in an extending transversely of the loom and in relation to the warps,to be contacted against" upona severin of one thereof -an electro magnetcontrol ing said cut-out switch, and circuit conductors, having a generator connected therewith, and connected with said electro magnet, and connected with said i metallic piece, and with a part of the loom with which the warp wires are in metallic .or electrical connection.

2.-In an electric warp stop-motion for a wire weaving loom, a driving shaft for operating the movable parts of a loom, a driver therefor, and a magnetic brake operable to stop the said shaft, an electric generator, circuit conductors connected with said generator and with said ma etic brake, normally open, and having a c osing switch therefor, an insulated metallicpiece extending transversely of the, loom and in relation to the warps,to be contacted against by a severed warp,-.an 'electroma et controlling said switch for maintaining t e brake circuit open,

circuit conductors, comprising a generator, connected with said electro ma net, connected with said transverse metal ic piece, and with a part of the loom with which the warp wires are in electrical connection.

3. In an electric warp stop-motion, a

driving shaft for operating the movable parts of a loom, a driver therefor, a magnetic device for connecting and-disconnecting said shaft and driver, and a magnetic brake operable to stop the said shaft, circuit conductors connected with said ma etic device, circuit conductors connected with said magnetic brake, and a dynamo or generator connected in each'of said circuits, the magnetic connectin device circuit .bein normally closed an the magnetic brake c rcuit being normally open, a cut out switch, for maintaining the one said circuit closed and the other circuit open, an insulated metallic iece extending transversely of the loom an in relation to the warps, and to be contacted against by a severed warp, an electro magnet for controlling said switch, circuit conductors, comprising a generatonconnected with said electro magnet, and connected with said transverse metallic piece and with apart of the loom ,with which the warp wires are in metallic connection.

4.- In an electric warp stop motion, a driving shaft for operating the movable parts of a loom, a driving pulley loosely revoluble relatively thereon, a clutch magnet for connectin and disconnecting said pulley and shaft, a ynamo, circuit conductors op ositely connected with said dynamo and wit said clutch magnet, normally closed, and having a circuit closing switch or cut-out, an insulated metallic piece extendin loom adjacent the run of be contacted against, by a warp upon a severing thereof,an electro magnet controltransversely of the g the warps,and to ling said cut-out switch, and circuit conduc tors comprising a generator connected with said electro magfiet, and connected with said transverse meta 'c piece and with a portion of the loom with which the warp wires are in electrical connection.

5. In an electric warp stop motion, a drivin shaft, for operating the movable arts of a 00m, having a brake disk affixed thereon, driving means for said shaft and a brake mag- .net mounted on a stationary support adja cent said brake magnet, and relatively to which the latter revolves, an electric enerator, circuit conductors connected wit said generator and with said brake magnet, normally open, and having a closing switch therefor,- an insulated metallic ieceextending transversely of the loom an adjacent the warps, an electro magnet controlling said switch, and circuit conductors, comprising a generator, connected with said electro magnet, and connected with said transverse metallic piece and witha part of the loom with which the. warp wires are in electrical connection.

6. In an electric warp stop-motion for a wire weaving loom, a driving shaft for operating the movable parts of a loom, a driver therefor, and a magnetic device for connecting and disconnecting said shaft with and from the driver-therefor, a metallic lay an electric generator, circuit conductors con- IZO nested with said generator and with said magnetic device, normally open, and having a circuit closing switch or cut-out, a metallic priece mounted on the lay and insulated thereom, and extending transversely of the'loom, and to bejcontacted against b asevered warp, an electro magnet controlhng said cutout switch, and circuit conductors, oppositely 'in electrical connection with-said insulated 7. In an electric warp stop motion for a wire weaving loom, a shaft for driving the movable parts of the loom, a driver therefor, and a ma netic device for connecting and disconnectmg the driver and said shaft, an electric generator, circuit-conductors connected with said generator and with said magnetic device, having a cut out switch, a circuit opening'and closing controller, and conductors connecting it in circuit with the generator and said magnetic connectin device, an electro-magnet controlling said out out switch and normally open circuit conductors therefor, comprising a generator and adapted to be closed by a severed war and means for periodically actuating sai( controller for opening the said circuit in which it is comprised. a

8. In an electric warp stop-motion for a wire weaving loom, a driving shaft for operating the movable parts of a loom, a driver therefor, and a magnetic device for connecting and disconnectin said shaft with and from the driver there or, an electric generator, circuit conductors connected with said generator and with said magnetic device,

normally closed at one place therein, and

having a switch or cut-out at such lace, a.

circuit opening and closing control er, and conductors connectlng 1t 1n c1rcu1t with the "generator and said magnetic connecting de-' V106, an insulated metallic. piece extendin transversely of the loom,to be contacts against by a severed warp,an electro magnet controlling said cut-out switch, circuit conductors,having a generator connected therewith,connected with said electro magnet, connected with said metallic ieces, and with a part of the loom with whic the warp wires are in metallic or electrical connection, and means for periodically operating said controller for its circuitopening action when the loom lay isin a given required position.

9. In a warp stop motion for a wire weaving loom, a shaft in driving connection with affixed thereon, a brake magnet at one side of said disk, and a pulley loosely rotatable on the shaft at the other side of said'disk and carrying a clutch magnet, an insulated me- .tallic piece extending transversely of the loom to be contacted a ainst upon thesevering of a warp wire, a amo and an electric .conductor connected i vith said dynamo and with said switch, separated contacts, and a conductor running from one of said contacts to said clutch ma net, and a conductor runningfrom said clutc magnet back to the dynamo, an electric conductor running from the other of said contacts to said brake magnet, and another contact, connected with said brake magnet and with the dynamo, an

electro magnet, and an armature therefor engaging the said switch and holding the same on the one of said contacts in the clutch magnet circuit, means foi' throwing the. switch, when released, onto the contact in the brake magnet circuit, and circuit conductors, coniprising a generator, connected with said electro magnet, connected with said insulated metallic piece, and with a part of the loom with which thew arp wires are in'metallic or electrical connection.

and disconnecting said shaft and driver, and

a magnetic brake operable to sto the said shaft, circuit conductors connecter with said magnetic connecting device, circuit conductors connected with said magnetic brake, and a dynamo connected in each of said circuits, the 1nagnetic-connecting-device-circuit having a cut out opening at one place therein, and a circuit opening and closing controller comprising separated insulated metallic pieces, and a movable bar consisting of metallic and insulatin portions, operable to connect, and also to cave electrically cutout, one of said metallic ortions of'the controller with and from t e other, and conductors connecting said controller in circuit with said generator and said magnetic connecting device, a switch for normally closing the first named cut out opening, and for leav ing normally open the magnetic brake circuit, and movable for reversing its relations, an insulated metallic piece extending transs versely of the loom and to be contacted against by a-severed warp, an electro magnet for controlling said switch, circuit conductors comprising a battery connected with said electro magnet and connected with said insulated metallic piece and withpart of the loom with which the warp wires are in metallic connection, and a rotary cam for periodically moving said bar of the controller for cutting-out the ma netic connecting device circuit in'which suc 1 controller is comprised at a given predetermined time in each operation of the loom.

1.1.. In an electric warpsto motion for a wire weaving loom, a shaft or driving the movable parts of the loom, a driving pulley therefor, and a magnetic clutch for connectelectro ma et com a battery, and

- ing and disconnecting said pulley and shaft, I adapted to e closed asevered Warp. [o

a dynamo, circuit conductors connected with Signed by me at L pringfield, Mass, in said dynamo and with said magnetic'clutch, presence of two subscribing witnesses.

having a cut out switch, an electro magnet CHARLES HENRY ATKINS. having an armature for engaging, and holding Witnesses said switch in its circuit closing position, and G. R. DRISOOLL,

normally open circuit conductors for said WM. S. BELLOWS. 

